Optical CMM Gauge Capability Evaluation for Sub Millimeter Molded Features
Optical CMM capability on sub-millimeter molded features requires material-specific bias correction and telecentric backlighting to maintain GR&R under 20%.
Non Contact Displacement
Meaning
The measurement of physical distance or position without making mechanical contact with the target object prevents surface damage and measurement distortion. Utilizing non contact displacement sensors allows manufacturers to monitor high speed moving parts, soft materials and delicate electronic components. This technique is widely applied in industries where contact probes would scratch or deform the product.
Sensor Technology
Optical, capacitive and eddy current sensors use different physical principles to measure the gap between the probe and the target. When deploying non contact displacement systems, the choice of sensor depends on whether the target material is conductive or non conductive. This selection ensures that the measurement signal remains stable and accurate.
Industrial Measurement
Monitoring the runout of high speed rotating shafts requires continuous, real time distance measurements to detect imbalances or bearing wear. In these demanding environments, non contact displacement monitoring provides early warning of mechanical failures before catastrophic damage occurs. This continuous tracking helps plan maintenance intervals more effectively.
Environmental Factor
Sensor performance can be degraded by dust, humidity and temperature fluctuations in the factory. When using optical sensors, keeping the light path clear of oil mist and debris is essential to avoid false distance readings. Installing protective enclosures and air purges helps maintain clean conditions around the sensors.
These measures ensure that the non contact displacement data remain reliable even in harsh industrial environments.